Finding the Third Proportional to 254,360.50 and 404,891

Step by Step Solution

1. Step 1: Write the proportion equation
   254,360.50 : 404,891 = 404,891 : x
2. Step 2: Convert to fraction form
   254,360.50/404,891 = 404,891/x
3. Step 3: Cross multiply
   254,360.50x = 404,891 × 404,891
4. Step 4: Simplify right side
   254,360.50x = 163,936,721,881
5. Step 5: Solve for x
   x = 163,936,721,881/254,360.50
6. Step 6: Final answer
   x = 644,505.42